BMC/Intel-BMC/linux.git/drivers/rtc/rtc-zynqmp.c, branch v5.2

rtc: zynqmp: convert to SPDX identifier

2019-03-18T02:36:01+00:00

Use SPDX-License-Identifier instead of a verbose license text. Signed-off-by: Alexandre Belloni

rtc: zynqmp: let the core handle range

2019-03-03T21:38:34+00:00

Let the core handle the RTC range instead of open coding it. Signed-off-by: Alexandre Belloni

rtc: zynqmp: fix possible race condition

2019-03-03T21:36:19+00:00

The IRQ is requested before the struct rtc is allocated and registered, but this struct is used in the IRQ handler. This may lead to a NULL pointer dereference. Switch to devm_rtc_allocate_device/rtc_register_device to allocate the rtc struct before requesting the IRQ. Signed-off-by: Alexandre Belloni

rtc: simplify getting .drvdata

2018-05-03T20:08:00+00:00

We should get drvdata from struct device directly. Going via platform_device is an unneeded step back and forth. Signed-off-by: Wolfram Sang Acked-by: Michal Simek (for zynqmp) Signed-off-by: Alexandre Belloni

rtc: stop validating rtc_time after rtc_time64_to_tm

2018-03-01T09:49:41+00:00

rtc_time64_to_tm never generates an invalid tm. It is not necessary to validate it. Signed-off-by: Alexandre Belloni

rtc: zynqmp: Update seconds time programming logic

2016-05-20T10:33:51+00:00

We program RTC time using SET_TIME_WRITE register and read the RTC current time using CURRENT_TIME register. When we set the time by writing into SET_TIME_WRITE Register and immediately try to read the rtc time from CURRENT_TIME register, the previous old value is returned instead of the new loaded time. This is because RTC takes nearly 1 sec to update the new loaded value into the CURRENT_TIME register. This behaviour is expected in our RTC IP. This patch updates the driver to read the current time from SET_TIME_WRITE register instead of CURRENT_TIME when rtc time is requested within an 1sec period after setting the RTC time. Doing so will ensure the correct time is given to the user. Since there is a delay of 1sec in updating the CURRENT_TIME we are loading set time +1sec while programming the SET_TIME_WRITE register, doing this will give correct time without any delay when read from CURRENT_TIME. Signed-off-by: Anurag Kumar Vulisha Signed-off-by: Alexandre Belloni

rtc: zynqmp: Write Calibration value before setting time

2016-05-20T10:33:51+00:00

It is suggested to program CALIB_WRITE register with the calibration value before updating the SET_TIME_WRITE register, doing so will clear the Tick Counter and force the next second to be signaled exactly in 1 second. Signed-off-by: Anurag Kumar Vulisha Signed-off-by: Alexandre Belloni

rtc: zynqmp: Enable RTC switching to battery power when VCC_PSAUX is N/A

2016-05-20T10:33:51+00:00

In order to conserve battery energy, during the PS operation, it is expected that the supply for the battery-powered domain to be switched from the battery (VCC_PSBATT) to (VCC_PSAUX) and automatically be switched back to battery when VCC_PSAUX voltage drops below a limit, doing so prevents the logic within the battery-powered domain from functioning incorrectly. Signed-off-by: Anurag Kumar Vulisha Signed-off-by: Alexandre Belloni

rtc: add xilinx zynqmp rtc driver

2015-09-05T17:37:19+00:00

Add support for RTC controller found on Xilinx Zynq Ultrascale+ MPSoC platform. Signed-off-by: Suneel Garapati Acked-by: Moritz Fischer Signed-off-by: Alexandre Belloni